51011601651546 has 32 divisors (see below), whose sum is σ = 102452380692480. Its totient is φ = 16932340850544.

The previous prime is 51011601651533. The next prime is 51011601651553. The reversal of 51011601651546 is 64515610611015.

It is a junction number, because it is equal to n+sod(n) for n = 51011601651498 and 51011601651507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67456491 + ... + 68208513.

It is an arithmetic number, because the mean of its divisors is an integer number (3201636896640).

Almost surely, 2^{51011601651546} is an apocalyptic number.

51011601651546 is an abundant number, since it is smaller than the sum of its proper divisors (51440779040934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51011601651546 is a wasteful number, since it uses less digits than its factorization.

51011601651546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799570.

The product of its (nonzero) digits is 108000, while the sum is 42.

The spelling of 51011601651546 in words is "fifty-one trillion, eleven billion, six hundred one million, six hundred fifty-one thousand, five hundred forty-six".